Pith Number

pith:MRVHRC45

pith:2016:MRVHRC45MSTDKD6MLIWVQWHBQX

not attested not anchored not stored refs pending

The elephant in the room: The problem of quantifying productivity in evaluative scientometrics

Ludo Waltman, Martijn Visser, Nees Jan van Eck, Paul Wouters

arxiv:1605.02378 v1 · 2016-05-08 · cs.DL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MRVHRC45MSTDKD6MLIWVQWHBQX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:15:21.156235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

646a788b9d64a6350fcc5a2d5858e185ee62e4da1f1ec27fc620edbdfcfc83f0

Aliases

arxiv: 1605.02378 · arxiv_version: 1605.02378v1 · doi: 10.48550/arxiv.1605.02378 · pith_short_12: MRVHRC45MSTD · pith_short_16: MRVHRC45MSTDKD6M · pith_short_8: MRVHRC45

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MRVHRC45MSTDKD6MLIWVQWHBQX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 646a788b9d64a6350fcc5a2d5858e185ee62e4da1f1ec27fc620edbdfcfc83f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31c54e429fa04f68245ff294e5dd0caae7b4f88628bc341e9642162ccb0a2973",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2016-05-08T22:48:00Z",
    "title_canon_sha256": "d61f51315e2e00e66a9d9bdf143730d44dbb824521961f14b77e9f91c6f14b82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.02378",
    "kind": "arxiv",
    "version": 1
  }
}